L-Theanine
Supports relaxation and smoother stimulant experience; often paired with caffeine.
Educational only — not medical advice. BodEvo summarizes research cautiously and labels estimates as estimates. Talk to a physician or registered dietitian before starting any supplement, diet, or training program.
What the evidence says
Good evidence for reducing caffeine-related jitters and anxiety. Some sleep support.
Typical dose & timing
Dose: 100–200 mg
Timing: With caffeine pre-workout or evening for relaxation.
Role in a stack
Focus/stimulant smoothing or sleep support.
Redundancy check:
Cautions & safety
May cause drowsiness in some users.
Generally very well tolerated.
Best for
caffeine jitters · focus · calm energy · sleep routine
Buying guide
Budget: L-theanine capsules from a bulk brand. 100–200 mg per capsule is standard.
Standard: Quality L-theanine with Suntheanine branding — the most studied form.
Premium: Suntheanine third-party certified for competition use.
References
- L-theanine reduces psychological and physiological stress responses. Biological Psychology (2007)
L-theanine reduces stress and anxiety responses. Consistent evidence for promoting relaxed alertness and reducing caffeine-related jitters when co-ingested with caffeine.
Use it in the app: open the Supplement Library and Stack Builder — free, local-first, no account required.